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Find the prime factors of the following numbers and find their LCM and HCF.
(i) 75, 135 (ii) 114, 76 (iii) 153, 187 (iv) 32, 24, 48
ANSWER:
(i) 75, 135
HCF = 3 × 5 = 15
LCM = 3 × 5 × 5 × 9 = 675
(ii) 114, 76
HCF = 2 × 19 = 38
LCM = 2 × 19 × 2 × 3 = 228
(iii) 153, 187
HCF = 17
LCM = 17 × 9 × 11 = 1683
(iv) 32, 24, 48
HCF = 2 × 2 × 2 = 8
LCM = 2 × 2 × 2 × 2 × 2 × 3 = 96
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